Oscillatory soot blower



Aug. 27, 1935. F. c. IAREY 2,012,901

OSCILLATORY SOOT BLOWER Filed Nov. 1, 1933 Patented Aug. 27, 1935 some;

n 2,012,901 JQSCILLATORY S001 BLOWER Fred 0. Amy, OakPark, 111., assignor to Vulcan- Soot 'Blower Corporation, a corporation of Pennsylvania Application The present invention relates to soot blowers oreleaners inwhich the tubular blower or clean-. ing element swings about an axis other than its own long axisand :has for its object to simplify and improve constructions of that type.

Viewedin one :of its aspects, the present in- 'vention maybe said te havefor its-object to -simplify and improve soot blowers adapted .to clean vertical tubes or lines installations-such,- for example, as air pr'eheaters -for furnac'es or the like I The various features' of novelty whereby my invention a is "characterized" will hereinafter 'be' pointed out with 3partici1larityin the claims; but, for a full understanding of myinvention and of its objects "and advantages, reference may be had to the following detailed description taken in connection with the accompanying -drawing, wherein'r v a Figure 1 is a vertical'section through an air preheater equipped with soot blow-ing apparatus embodying the present invention; Fig. '2 is a sectiorron line 2- 2 of Fig. l; 3 is-a topqilan viewyon a 'larger'sca-le, of one'endof the blower element, the flues being indicated "in dotted lines; and FigJ4 iS 'a transverse section, on instill larger scale, through the main portion-of the 'blower -element.- g A Referring to the drawing;A represents the-cas ing or housing of a heat interchanger which is shown as-being divided -day 'a vertical partition *B into two-compartments one bf which constitutes an ai-r duct,-and the other of which 'contains many vertical tubes or flues C arranged in transverse rows. The' lower ends of the tubes orfluesare connected withand-open out throug hahorizontal' head-D extending across the length and width of "the compartment in which the tubes or flues are located. These parts mayhem any usual or suitable construction Extending across the :en-

tire midthlof the casing or housing .at a con- 'employ a head operating in accordance" with the -disclosure in my prior application, Serial- No.

Novemberil, 193s, SerialNoi-z69611J74 ff '9 Claims. (01. 257-1) 64.0,373,"fi1edocmber al, 1932. rrhe headinfirm aforesaid application :hasa wheel -.or sheave ithat may-be turnedv continuously :in one direction or thexother, causing a member icorresponding "to the member 'I to turnrthrou'gh a single step-dur- 5 ing eachcomplete revolution :ofthe wheel .or

sheave; the direction-m the :step by step move+ ,ment bjeing,automatioallyreversed'luponx the reversal' of-the turning movement of the wheel or 19 L In the 'arrangement Fshown,.the 'memherl. lsisplaced below theilevel ofxt-thezfloorrEfinthefure nace'room or boiler room, so that the'blower head with itsf'wheel orisheave 4 lies below the floor, .An endless chain :5zpa-ssesaround the .lunder'zhalf 15 :of "the wheel or sheave 4 and extends upwardly and were secondwheel or sheave 6 supported at such an elevation that itmay conveniently be turned by :hand by a-workman. :In the arrange zhorizontail shaft Ti,.-paralle1with the pipedrrtube I, which shaft is rotatably supported'inza suitable ibracket 8-lprojectin'gcfrom the adjacentwa'll of thencasinglzor housing. 011 "the outer [end of the shaft 1, beyondthe .wheel'or sheave a6,1is'a:suit:

:able operating crankor handle 9. -i

.Thezactnal blowerselement is not .theypipe, 1|,

lout a pipehso'r tubular :element I0 lyingmar'allel -.interior:of:the blower element In; There smay-be 35 a tie member; l2. arranged hetweenfthe upper :or outer ends of the arms lil near and parallel "with the blower "element; thistie member being con 1 'venientl-y a pipe m tube so 38,170 :be light and -yet strong and rigid; 'Thezblower element is provided 4,0 withinozzles .14" tdistributedljlengthwise ,-:o'f the :same'. As is %customary in lCDIlStI'llCti-OIIS of this type, theverticaltubes or ,flues in=each transverse nrow are staggered with respectxto jthose ,invthe two adjacent rows. Thus, each nfithe oddxnum- .r-bered :tubes or flues, readingfrom the fileitiin Fig. 1, may he indshe Jfront row, while athe: others :are

the nextirowtoward the rear. The nozzles on the blower element are therefore, arranged in two rows, those'lin one row being ,shownin 1111 lines ",59

'in 1iig.;.'l zand:i;hose ;in the other rowsin dotted .1ines,:because lie behind the blower element,

as viewed in Fig. 1. The arrangementiof {the znozz'lesrii-snoi icfoursegrsueh: that :the vblower.ele- Ement my. be iplacedinzcleaning lorgblowingqposi tion with respect to two adjacent transverse rows of vertical tubes or flues'and thus cause these tubes or flues to be cleaned two rows at a time.

In moving the blowerelement across its entire sweep so as to cause all of the vertical tubes or flues within its range to be cleaned, the direction of the jets discharged by the nozzles will naturally vary according to the point at which the blower element happens to be in its arc of'travel, if this element be fixed to the supportingarms.

Obviously, this would prevent the jets from being discharged properly into all of the vertical tubes or flues; I have therefore provided means for turning the blower element relatively to its supporting arms, while these arms are swinging back and forth about the axis of the pipe I, whereby the jets will always be discharged in the proper direction to enterthe vertical tubes orcorresponding stationary pair of ears I! is arod or strut l8,'pinned to both pairs of ears. Conse-' quently, when the pipe I turns, the connections for the lower -ends=of-.the rods or struts l8 being fixed, theblower element must turn about its long axis. In other words, if a radiusfrom the axis of the blower element through the pointo-f con.-

nection between one of the rods or struts and the ears I 5 is horizontal in a given position of the parts,this radius will always remain horizontal throughout the entire range of swinging movements of the'device, and the directions in which the jets-are discharged will always be parallel with the directions in any other position of the blower. element. I

The pipe. I is provided with a second pair of radial arms l9, l9 exte'ndingdownwardly therefrom; thesearms being provided with weights, as indicated at 20, at their lower ends. The weighted arms balance the tubular'blowing element'and the means for supportingtheysame from the pipe I, so that the device'as a whole tends to remain in any. angular position into which it may be moved.

\ Some of therverticaltubesor flues along the sides. of the" compartment"lcontaining the same or flues that cannot be reached by the overlie what may be termedthe hollow supporting heads 2| onthe upper ends of. the tubular arms II. In order thatwthese tubes tor flues .may be properly blown, I provide the main blower provided with suitable nozzles -231that discharge jets into the lower ends of thosevertical tubes jets from the main blower element.

While I have'illustrated and described with particularity .only a single preferred form of my Iinvention,I do not desire to be limited to the exact structural details thus illustrated and'described; but intend to cover all forms and arrangements which come withinthe definitions. of

my invention'con tituting the appended claims.

or flues, a pipe mountedat some distance beyond the ends of said tubes or flues with its axis transverse to the axes of the latter and adapted to turn about its own axis, a tubular blower element located near the open ends of said tubes or flues and paralleling said pipe, means supporting said blower element from said pipe for swinging movements about the axis of the latter and for placing the interior of the blower element in communication with the interior of the pipe, means for turning said pipe, and means to prevent the blower element from turning about its own axis during its swinging movements.

2. In combination, a group of open-ended tubes or flues, a pipe mounted at some distance beyond {the ends of said tubes or flues with its axis transverse'to the axes of the latter and adapted to turn.

about its own axis, a tubular blower element located near the open ends of said tubes or flues and paralleling said pipe, means supporting said blower element from said pipe for swinging movements about the axis of the latter and for placing the interior of the blower element in communication with, the interior of the pipe, means for turning said pipe,'and means fortautomatically causing relative turning movements between the blower element and the'supporting means therefor while the blower element is making swinging movements.v

,3. In combination, a group of vertical openended tubes or flues, a horizontal pipe mounted at some distance below the ends of said tubes or flues and adapted to turn about its own axis, a horizontal tubular blower, element located near the open ends of said tubes or flues, means supporting said blower element from said pipe and placing the interior thereof" in communication with the interior of the pipe,means for turning flues andadapted to turn about its ownaxis, a

tubular blower element located near the open ends of said tubes or .flues,- means supporting said blower element from said pipe and placing the interior of the blower element in communication with the interior of the pipe, means for turning said pipe, and means for automaticallycausing relative turning movements between the blower element and the supporting means therefor while the blower element is making swinging movements.

5. In combination,'a group of vertical openended tubes or flues, a horizontal pipe mounted atsome distance below the ends of said tubes or flues and adapted to turn about its own axis, a horizontal tubular blower element located near the open ends of said tubes or flues, means supporting said blower elementfrom said pipe and placingthe interior. thereof in communication with; the interior of the pipe, means for turning said pipefand a counter weight balancing the weight of the blower element and the connecting means between the latter and the said pipe to cause the swinging structureas a whole to remain inanyangular position into which it may be brought. v

6. In combination, a group of vertical openended tubes or flues, .a horizontal pipe mount.- ed at some distance below the ends of said tubes -or flues and-adapted to turn about its own axis,

tubular arms projecting upwardly from said pipe,

a tubular blower element extending between and rotatable in the o'uterendsof said arms, the

parts being so constructed and arranged that the arms place the blower element in communication with the interior of the pipe, means for turning said pipe, andmeans for preventing the blower element from turning about its own axis while said pipe is being turned.

7. In combination, a group of vertical openended tubes or lines, a-horizontal pipemounted at some distance below the ends of said tubes or flues and adapted to turn about its own axis,

tubular arms projecting upwardly from said pipe,

a tubular blower element extending between and rotatable in the outer ends of said arms, the parts being so constructed and arranged that the arms place the blower element in communication with the interior of the pipe, means for turning said pipe, and a rod or strut hinged at one end to the blower element and at the other end to a stationary part beside said pipe, the effective length of the rod or strut being equal to the distance between the axes of the pipe and the blower element, and the distance between the upper hinge axis and the axis of the blower. element being equal to the distance between the lower hinge axis at some distance below the ends of said tubes or flues and adapted toturn about its own axis, a horizontal tubular blower element located near the open ends of said tubes or flues, means supporting said blower element from said pipe and placing the interior thereof in communication with the interiorof the pipe, means, for turning said pipe, means to prevent the blower element from turning about its own axis during its swing,- ing movements, and a head associated with one end of said pipe to deliver to it a cleaning fluid and to turn it step by step.

9. In a fluid heater cleaner, a tubular blower 1 2ov I about an axis apart from and parallel to its long axis, and means toturn said element about its long axis to maintain the nozzles directed toward the surfaces of the fluid heater to be cleaned.

* FRED C. AREY. 

